Description: Window door contact comes with wire leads. This door contact is constructed of solid zinc alloy material and is perfect for reliable performance. Description: Housing: ABS Operating Distance: 15-25mm Maximum working Current: 0.5A Maximum working Voltage: 100V DC Contact Power: 10W Lead: 1007UL22AWG450mm When the two Magnets' distance is more than 15mm-25mm, Open circuit(NO) When the two Magnets' distance is less than 15mm-25mm, NC Size (L x W x H): Approx. 33.5*13.5*9 mm Cable Length: Approx. 42.5cm Mounting Hole Pitch: Approx.25mm Color: White Size Chart is following: Package Includes: 1x Door Magnetic Switch 4x Mounting Screws